// Numbas version: exam_results_page_options
{"name": "PCA bolus dose multiple presses", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"statement": "<p>Evaluate the following&nbsp;without using a calculator.</p>\n<p>If you are unsure of how to do&nbsp;a question, click on&nbsp;<i>Reveal answers</i>&nbsp;to see the full working. Then, once you understand how to do the question, click on&nbsp;<em>Try another question like this one</em>&nbsp;to start again.</p>", "variablesTest": {"condition": "", "maxRuns": 100}, "preamble": {"css": "", "js": ""}, "name": "PCA bolus dose multiple presses", "variable_groups": [], "ungrouped_variables": ["c", "crounded", "m", "v", "unit", "b", "ans", "n", "ans2"], "functions": {}, "parts": [{"marks": 0, "variableReplacements": [], "prompt": "<p>A patient-controlled analgesia (PCA) contains&nbsp;$\\var{m}$ {unit}&nbsp;of a certain drug made in&nbsp;$\\var{v}$ mL&nbsp;of IV fluid. The machine is set to deliver a bolus dose of $\\var{b}$ mL each time the button is pressed. If the button is pressed $\\var{n}$ times in one hour, how much of the drug has been received in that hour?</p>\n<p>[[0]]&nbsp;{unit}</p>", "sortAnswers": false, "variableReplacementStrategy": "originalfirst", "unitTests": [], "showCorrectAnswer": true, "customName": "", "showFeedbackIcon": true, "extendBaseMarkingAlgorithm": true, "type": "gapfill", "scripts": {}, "gaps": [{"marks": 1, "variableReplacements": [], "minValue": "ans2", "variableReplacementStrategy": "originalfirst", "correctAnswerStyle": "plain", "unitTests": [], "showFractionHint": true, "mustBeReduced": false, "showCorrectAnswer": true, "notationStyles": ["plain", "en", "si-en"], "customName": "", "showFeedbackIcon": true, "extendBaseMarkingAlgorithm": true, "type": "numberentry", "mustBeReducedPC": 0, "scripts": {}, "correctAnswerFraction": false, "maxValue": "ans2", "customMarkingAlgorithm": "", "useCustomName": false, "allowFractions": false}], "customMarkingAlgorithm": "", "useCustomName": false}], "variables": {"m": {"templateType": "anything", "group": "Ungrouped variables", "definition": "c*v", "description": "", "name": "m"}, "unit": {"templateType": "anything", "group": "Ungrouped variables", "definition": "random('mg','mcg')", "description": "", "name": "unit"}, "ans": {"templateType": "anything", "group": "Ungrouped variables", "definition": "b*c", "description": "", "name": "ans"}, "b": {"templateType": "anything", "group": "Ungrouped variables", "definition": "random(1,2,2)", "description": "", "name": "b"}, "n": {"templateType": "anything", "group": "Ungrouped variables", "definition": "random(2..5)", "description": "", "name": "n"}, "v": {"templateType": "anything", "group": "Ungrouped variables", "definition": "random(5..50#5)", "description": "", "name": "v"}, "c": {"templateType": "anything", "group": "Ungrouped variables", "definition": "random(2..12)", "description": "", "name": "c"}, "crounded": {"templateType": "anything", "group": "Ungrouped variables", "definition": "precround(c,0)", "description": "", "name": "crounded"}, "ans2": {"templateType": "anything", "group": "Ungrouped variables", "definition": "ans*n", "description": "", "name": "ans2"}}, "advice": "<p>First work out the concentration</p>\n<p><span data-jme-visible=\"unit='mg'\">\\begin{align}\\text{concentration (mg/mL)}&amp;=\\frac{\\text{mass (mg)}}{\\text{volume (mL)}}\\\\&amp;=\\frac{\\var{m} \\text{ mg}}{\\var{v} \\text{ mL}}\\\\&amp;=\\var{c} \\text{ mg/mL}\\end{align}</span></p>\n<p><span data-jme-visible=\"unit='mcg'\">\\begin{align}\\text{concentration (mcg/mL)}&amp;=\\frac{\\text{mass (mcg)}}{\\text{volume (mL)}}\\\\&amp;=\\frac{\\var{m} \\text{ mcg}}{\\var{v} \\text{ mL}}\\\\&amp;=\\var{c} \\text{ mcg/mL}\\end{align}</span></p>\n<p>Now the individual dose:</p>\n<p><span data-jme-visible=\"unit='mg'\">\\begin{align}\\text{individual dose (mg)}&amp;=\\text{concentration (mg/mL)}\\times \\text{volume (mL)}\\\\&amp;=\\var{c} \\text{ mg/mL}\\times \\var{b} \\text{ mL}\\\\&amp;=\\var{ans} \\text{ mg}\\end{align}</span></p>\n<p><span data-jme-visible=\"unit='mcg'\">\\begin{align}\\text{individual dose (mcg)}&amp;=\\text{concentration (mcg/mL)}\\times \\text{volume (mL)}\\\\&amp;=\\var{c} \\text{ mcg/mL}\\times \\var{b} \\text{ mL}\\\\&amp;=\\var{ans} \\text{ mcg}\\end{align}</span></p>\n<p>Now since the patient received $\\var{n}$ individual doses, they received:</p>\n<p><span data-jme-visible=\"unit='mg'\">\\begin{align}\\text{total amount (mg)}&amp;=\\text{individual dose (mg)}\\times \\text{number of doses}\\\\&amp;=\\var{ans}\\text{ mg} \\times \\var{n}\\\\&amp;=\\var{ans2} \\text{ mg}\\end{align}</span></p>\n<p><span data-jme-visible=\"unit='mcg'\">\\begin{align}\\text{total amount (mcg)}&amp;=\\text{individual dose (mcg)}\\times \\text{number of doses}\\\\&amp;=\\var{ans}\\text{ mcg} \\times \\var{n}\\\\&amp;=\\var{ans2} \\text{ mcg}\\end{align}</span></p>", "metadata": {"licence": "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International", "description": "Nursing question. Determine mg or mcg in a bolus dose."}, "extensions": [], "tags": [], "rulesets": {}, "contributors": [{"name": "Ben Brawn", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/605/"}]}]}], "contributors": [{"name": "Ben Brawn", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/605/"}]}